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机制砂
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机制砂
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manufactured sand
机制砂
经除土处理,由机械破碎、筛分制成的,公称粒径小于5毫米的岩石、矿山尾矿或工业废渣颗粒。不包括软质、风化的颗粒。
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St. Columban's Foreign Mission Society
STCW
STCW-F1995
STD
STDM
STD system
s-t duality
st duality
Steadily Increasing Dividend Policy
steadily increasing dividend policy
steadiness
steady
steady circuit
steady combustion fogger
steady condition of current
steady constraint
steady current
steady current condition
steady current field
steady current source
steady density
steady discharge
steady distribution
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